When a resistance of 12 ohm is connected across a cell, its termi… - Vidyadip

Question

When a resistance of \(12 ohm\) is connected across a cell, its terminal potential difference is balanced by \(120 cm\) length of potentiometer wire. When the resistance of \(18 ohm\) is connected across the same cell, the balancing length is \(150 cm\). Find the balancing length when the cell is in open circuit. Also calculate the internal resistance of the cell.

✓

Answer

Get the step-by-step solution for this question inside the Vidyadip app.

Get the answer in the app

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in Brief" from Current Electricity→Current Electricity — all question types→Physics STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Obtain an expression for the half-lifetime of radioactive material. Hence state the relation between an average life and half lifetime of radioactive material.

The length of a sonometer wire between two fixed ends is $110\ cm$. Where should be the two bridges be placed so as to divide the wire into three segments, whose fundamental frequencies are in the ratio of $1: 2: 3$ ?

A string is fixed at the two ends and is vibrating in its fundamental mode. It is known that the two ends will be at rest. Apart from these, is there any position on the string which can be touched so as not to disturb the motion of the string? What will be the answer to this question if the string is vibrating in its first and second overtones?

The energy of a photon is 2 eV. Find its frequency and wavelength.

With the help of a circuit diagram describing an experiment to study the photoelectric effect.

What is the natural frequency of $LC$ circuit ? What is the reactance of this circuit at this frequency

Draw a neat labelled diagram to illustrate schematics of a refrigerator.

State the characteristics of pressure due to a liquid at rest at a point within it.

A long solenoid of length l, cross-sectional area A and having N1 turns (primary coil) has a small coil of N2 turns (secondary coil) wound about its centre. Determine the Mutual inductance (M) of the two coils.

A square wire loop with sides $0.5 m$ is placed with its plane perpendicular to a magnetic field. The resistance of the loop is $5 \Omega$. Find at what rate the magnetic induction should be changed so that a current of $0.1 A$ is induced in the loop.